[INFO] cloning repository https://github.com/kevinmichaelchen/tokio-minihttp-hello-world
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kevinmichaelchen/tokio-minihttp-hello-world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinmichaelchen%2Ftokio-minihttp-hello-world", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinmichaelchen%2Ftokio-minihttp-hello-world'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a06d6187c45c87d1a23c18b7428f71fa452c1ad2
[INFO] checking kevinmichaelchen/tokio-minihttp-hello-world against master#b389b0ab72cb0aa9acf4df0ae0c0e12090782da9 for pr-128351-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinmichaelchen%2Ftokio-minihttp-hello-world" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world on toolchain b389b0ab72cb0aa9acf4df0ae0c0e12090782da9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world
[INFO] finished tweaking git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world
[INFO] tweaked toml for git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-minihttp`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded iovec v0.1.2
[INFO] [stderr]   Downloaded tokio-service v0.1.0
[INFO] [stderr]   Downloaded redox_termios v0.1.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9122296f55a569715c0726c842a1625ca6f2f86d7d3ad32b0fcc334fa05b138f
[INFO] running `Command { std: "docker" "start" "-a" "9122296f55a569715c0726c842a1625ca6f2f86d7d3ad32b0fcc334fa05b138f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9122296f55a569715c0726c842a1625ca6f2f86d7d3ad32b0fcc334fa05b138f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9122296f55a569715c0726c842a1625ca6f2f86d7d3ad32b0fcc334fa05b138f", kill_on_drop: false }`
[INFO] [stdout] 9122296f55a569715c0726c842a1625ca6f2f86d7d3ad32b0fcc334fa05b138f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e7ba694fe6d2896d4ab2276f35bd46bfa579d5e0cf16c20de921d9ab88d0a4e
[INFO] running `Command { std: "docker" "start" "-a" "4e7ba694fe6d2896d4ab2276f35bd46bfa579d5e0cf16c20de921d9ab88d0a4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking futures v0.1.25
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.3
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]    Compiling arrayvec v0.4.9
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking tokio-executor v0.1.5
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking tokio-timer v0.2.8
[INFO] [stderr]     Checking tokio-current-thread v0.1.4
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]     Checking tokio-minihttp v0.1.0 (https://github.com/tokio-rs/tokio-minihttp#c8afcc00)
[INFO] [stderr]     Checking tokio-minihttp-hello-world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     drop(env_logger::init());
[INFO] [stdout]    |     ^^^^^------------------^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          argument has type `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 39 -     drop(env_logger::init());
[INFO] [stdout] 39 +     let _ = env_logger::init();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     drop(env_logger::init());
[INFO] [stdout]    |     ^^^^^------------------^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          argument has type `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 39 -     drop(env_logger::init());
[INFO] [stdout] 39 +     let _ = env_logger::init();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.44s
[INFO] running `Command { std: "docker" "inspect" "4e7ba694fe6d2896d4ab2276f35bd46bfa579d5e0cf16c20de921d9ab88d0a4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e7ba694fe6d2896d4ab2276f35bd46bfa579d5e0cf16c20de921d9ab88d0a4e", kill_on_drop: false }`
[INFO] [stdout] 4e7ba694fe6d2896d4ab2276f35bd46bfa579d5e0cf16c20de921d9ab88d0a4e
[INFO] checking kevinmichaelchen/tokio-minihttp-hello-world against try#16d823b1c168ce52c66ccc00dfd686f775a45c65 for pr-128351-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinmichaelchen%2Ftokio-minihttp-hello-world" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world on toolchain 16d823b1c168ce52c66ccc00dfd686f775a45c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world
[INFO] finished tweaking git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world
[INFO] tweaked toml for git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kevinmichaelchen/tokio-minihttp-hello-world already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f36da27c23d3f9f72ccc6d76e47b8c3c7a37a220794864ea225ff3ec8c58e4a
[INFO] running `Command { std: "docker" "start" "-a" "4f36da27c23d3f9f72ccc6d76e47b8c3c7a37a220794864ea225ff3ec8c58e4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f36da27c23d3f9f72ccc6d76e47b8c3c7a37a220794864ea225ff3ec8c58e4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f36da27c23d3f9f72ccc6d76e47b8c3c7a37a220794864ea225ff3ec8c58e4a", kill_on_drop: false }`
[INFO] [stdout] 4f36da27c23d3f9f72ccc6d76e47b8c3c7a37a220794864ea225ff3ec8c58e4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3758e0381a02a6af04887d5aa5985c7d91e25c2b4768a0781006c4719613d0fa
[INFO] running `Command { std: "docker" "start" "-a" "3758e0381a02a6af04887d5aa5985c7d91e25c2b4768a0781006c4719613d0fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking futures v0.1.25
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.3
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling arrayvec v0.4.9
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.0
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking tokio-executor v0.1.5
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking tokio-timer v0.2.8
[INFO] [stderr]     Checking tokio-current-thread v0.1.4
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking tokio-minihttp v0.1.0 (https://github.com/tokio-rs/tokio-minihttp#c8afcc00)
[INFO] [stderr]     Checking tokio-minihttp-hello-world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     drop(env_logger::init());
[INFO] [stdout]    |     ^^^^^------------------^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          argument has type `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 39 -     drop(env_logger::init());
[INFO] [stdout] 39 +     let _ = env_logger::init();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     drop(env_logger::init());
[INFO] [stdout]    |     ^^^^^------------------^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          argument has type `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 39 -     drop(env_logger::init());
[INFO] [stdout] 39 +     let _ = env_logger::init();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.46s
[INFO] running `Command { std: "docker" "inspect" "3758e0381a02a6af04887d5aa5985c7d91e25c2b4768a0781006c4719613d0fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3758e0381a02a6af04887d5aa5985c7d91e25c2b4768a0781006c4719613d0fa", kill_on_drop: false }`
[INFO] [stdout] 3758e0381a02a6af04887d5aa5985c7d91e25c2b4768a0781006c4719613d0fa